1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/* File: z-util.c */
/* Purpose: Low level utilities -BEN- */
#include "z-util.h"
/*
* Global variables for temporary use
*/
char char_tmp = 0;
byte byte_tmp = 0;
sint sint_tmp = 0;
uint uint_tmp = 0;
long long_tmp = 0;
huge huge_tmp = 0;
errr errr_tmp = 0;
/*
* Global pointers for temporary use
*/
cptr cptr_tmp = NULL;
vptr vptr_tmp = NULL;
/*
* Constant bool meaning true
*/
bool_ bool_true = 1;
/*
* Constant bool meaning false
*/
bool_ bool_false = 0;
/*
* Global NULL cptr
*/
cptr cptr_null = NULL;
/*
* Global NULL vptr
*/
vptr vptr_null = NULL;
/*
* Global SELF vptr
*/
vptr vptr_self = (vptr)(&vptr_self);
/*
* Convenient storage of the program name
*/
cptr argv0 = NULL;
/*
* A routine that does nothing
*/
void func_nothing(void)
{
/* Do nothing */
}
/*
* A routine that always returns "success"
*/
errr func_success(void)
{
return (0);
}
/*
* A routine that always returns a simple "problem code"
*/
errr func_problem(void)
{
return (1);
}
/*
* A routine that always returns a simple "failure code"
*/
errr func_failure(void)
{
return ( -1);
}
/*
* A routine that always returns "true"
*/
bool_ func_true(void)
{
return (1);
}
/*
* A routine that always returns "false"
*/
bool_ func_false(void)
{
return (0);
}
/*
* Determine if string "t" is equal to string "t"
*/
bool_ streq(cptr a, cptr b)
{
if ((a == NULL) && (b == NULL)) { return TRUE; }
if (a == NULL) { return FALSE; }
if (b == NULL) { return FALSE; }
return (!strcmp(a, b));
}
/*
* Determine if string "t" is a suffix of string "s"
*/
bool_ suffix(cptr s, cptr t)
{
int tlen = strlen(t);
int slen = strlen(s);
/* Check for incompatible lengths */
if (tlen > slen) return (FALSE);
/* Compare "t" to the end of "s" */
return (!strcmp(s + slen - tlen, t));
}
/*
* Redefinable "plog" action
*/
void (*plog_aux)(cptr) = NULL;
/*
* Print (or log) a "warning" message (ala "perror()")
* Note the use of the (optional) "plog_aux" hook.
*/
void plog(cptr str)
{
/* Use the "alternative" function if possible */
if (plog_aux) (*plog_aux)(str);
/* Just do a labeled fprintf to stderr */
else (void)(fprintf(stderr, "%s: %s\n", argv0 ? argv0 : "???", str));
}
/*
* Redefinable "quit" action
*/
void (*quit_aux)(cptr) = NULL;
/*
* Exit (ala "exit()"). If 'str' is NULL, do "exit(0)".
* If 'str' begins with "+" or "-", do "exit(atoi(str))".
* Otherwise, plog() 'str' and exit with an error code of -1.
* But always use 'quit_aux', if set, before anything else.
*/
void quit(cptr str)
{
/* Attempt to use the aux function */
if (quit_aux) (*quit_aux)(str);
/* Success */
if (!str) (void)(exit(0));
/* Extract a "special error code" */
if ((str[0] == '-') || (str[0] == '+')) (void)(exit(atoi(str)));
/* Send the string to plog() */
plog(str);
/* Failure */
(void)(exit( -1));
}
/*
* Redefinable "core" action
*/
void (*core_aux)(cptr) = NULL;
/*
* Dump a core file, after printing a warning message
* As with "quit()", try to use the "core_aux()" hook first.
*/
void core(cptr str)
{
char *crash = NULL;
/* Use the aux function */
if (core_aux) (*core_aux)(str);
/* Dump the warning string */
if (str) plog(str);
/* Attempt to Crash */
(*crash) = (*crash);
/* Be sure we exited */
quit("core() failed");
}
|
